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IT3017 5 Gb/s High-Sensitivity Limiter Amplifier
Description
The IT3017 is a limiting amplifier for use as a post amplifier in optical receivers. Signals as small as +/-7 mVpp differential can be amplified to 1.28 Vpp differential. Offset correction and output voltage control are provided. Both AC and DC coupling are allowed at the input and output. The high sensitivity allows the device to be used at the output of a transimpedance amplifier.
Features
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3-dB bandwidth: 5 GHz Differential gain: 42 dB Saturated output: 640 mVpp on each output into 50 ohms Single bias supply: -5.2 V Power consumption: 494 mW Bias current: 95 mA DC offset correction Amplitude voltage control Low RMS jitter Low-cost JEDEC QFP-N (MO-220) package
Absolute Maximum Ratings
S ymbol
Vee1,2 Vd Vm T ch T stg
Parameters/conditions
Power supply voltage Applied voltage at data input (differential) Applied voltage at data input (single ended) Maximum channel temperature Storage temperature
Min.
-8
Max.
0 3 1.5 5 150
Units
V V V mA
o
Ioffset(+),(-) Offset control current -65
C
150
C
Recommended Operating Conditions
Symbol
Tc Vee1 Vee2 Iee1+Iee2 Voffset (+) Voffset (-) Vctrl Vd Vm Vindc
Parameters/conditions
Operating temperature range (T case) Power supply voltage Power supply voltage T otal bias supply current Offset control voltage Offset control voltage Amplitude voltage control Applied peak to peak voltage at data input (differential) Applied peak to peak voltage at data input (single ended) Input/output interface DC input voltage (with DC-coupled input)
Min.
0 -5.45 -5.45 80 -5 -5 -5.2 7 14
Typ.
-5.2 -5.2 95
Max.
85 -4.95 -4.95 110 5 5 0 1000 1000
Units
o
C
V V mA V V V mV mV V
AC and DC coupled -0.5 0.5
www.iterrac.com
This is a Production data sheet. See "Product Status Definitions" on Web site or catalog for product development status.
iTerra Communications 2400 Geng Road, Ste. 100, Palo Alto, CA 94303 Phone (650) 424-1937, Fax (650) 424-1938
February 23, 2006 Doc. 4040 Rev 0
1
IT3017 5 Gb/s High-Sensitivity Limiter Amplifier
Electrical Characteristics
At ambient temperature Vee1,2=-5.2 V
Symbol P G B3dB RLin RLout Vin Parameters/conditions Pow er consumption Differential small signal gain 3 dB bandw idth Input return loss (up to 10 GHz) Output return loss (up to 10 GHz) Input sensitivity diff. input (BER<1E-12, 223-1PRBS, 5Gb/s) Output peak to peak voltage (either Q or /Q) (Vctrl=0V for max. output voltage) Vout sensitivity vs. bias (Vee=-5.2 V +/-5%) Output DC voltage (DC coupled to 50 ohm load) Rise time (20% - 80%) Fall time (20% - 80%) Jitter peak to peak -450 -350 30 30 6 590 Min. 416 41 4.5 10 12 Typ. 494 42 5 15 15 4 640 +/-11 -250 40 40 11 Max. 572 Units mW dB GHz dB dB mVpp mVpp % mV ps ps ps
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Vout Vout Voutdc Trse Tfse Jpp
S-Parameter Data
(Measured on connectorized evaluation board)
50 45 40 35
IT3017 Single Ended Gain
0 -5 -10 -15
iT3021 Input Return Loss
Vee1 = Vee2 = -5.2 V Iee1+Iee2 = 95 mA
S21 (dB)
25 20 15 10 5 0 0 1 2 3 4 5 6 7 8 9 10
S11 (dB)
30
-20 -25 -30 -35 -40 -45 -50 0 1 2 3 4 5 6 7 8 9 10
Freq. (GHz)
Freq. (GHz)
IT3017 Output Return Loss
0 -5 -10 -15
IT3017 Isolation
0 -10 -20 -30
S22 (dB)
S22 (dB)
-20 -25 -30 -35 -40 -45 -50 0 1 2 3 4 5 6 7 8 9 10
-40 -50 -60 -70 -80 -90 -100 0 1 2 3 4 5 6 7 8 9 10
Freq. (GHz)
Freq. (GHz)
www.iterrac.com
This is a Production data sheet. See "Product Status Definitions" on Web site or catalog for product development status.
iTerra Communications 2400 Geng Road, Ste. 100, Palo Alto, CA 94303 Phone (650) 424-1937, Fax (650) 424-1938
February 23, 2006 Doc. 4040 Rev 0
2
IT3017 5 Gb/s High-Sensitivity Limiter Amplifier
Eye Diagram Performance
Vee1 = Vee2 = -5.2 V Iee1+Iee2 = 95 mA
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Bit rate: 5 Gb/s Vin =+/-6 mVpp, Vout = +/-580 mVpp
Bit rate: 5 Gb/s Vin =+/-10 mVpp, Vout = +/-650 mVpp
Bit rate: 5 Gb/s Vin =+/-50 mVpp, Vout = +/-650 mVpp
Bit rate: 5 Gb/s Vin =+/-100 mVpp, Vout = +/-650 mVpp
Bit rate: 5 Gb/s Vin =+/-200 mVpp, Vout = +/-650 mVpp
Input sensitivity = +/-3 mVpp differential input, 5 Gb/s Output voltage = 355 mVpp single-ended
iTerra Communications 2400 Geng Road, Ste. 100, Palo Alto, CA 94303 Phone (650) 424-1937, Fax (650) 424-1938
www.iterrac.com
This is a Production data sheet. See "Product Status Definitions" on Web site or catalog for product development status.
February 23, 2006 Doc. 4040 Rev 0
3
IT3017 5 Gb/s High-Sensitivity Limiter Amplifier
Performance As Function of Input Voltage
Output Voltage (+/-mV)
Input/Output Characteristic
700
Output Voltage (+/-mV) 700 650 600 550 500 450 400 350 300 1
Input/Output Characteristic
650 600 550 500 450 400 350 300 0 2 4 6 8 10 12 14 16 18 20 Input (+/-mV)
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10 100 Input (+/-mV)
1000
Input/Output DC Characteristics
0 -100
Peak to Peak Jitter vs Input Voltage @ 5Gb/s 30 25
Jitter (pp-psec)
DC Output (mV)
-200 -300 -400 -500 -600 -700 -800
-280 -240 -200 -160 -120 -80 -40 0 40 80 120 160 200 240 280
20 15 10 5 0 1 10 100 1000
Input Amplitude (mVpp)
DC Input Offset (*) (mV)
Rise Time vs Input Voltage @ 5Gb/s 70 60
Fall Time (psec)
Rise Time (psec)
Fall Time vs Input Voltage @ 5Gb/s
70 60 50 40 30 20 10 0
50 40 30 20 10 0 1 10 100 1000
Input Amplitude (mVpp)
1
10
100
1000
Input Amplitude (mVpp)
(*) Input applied to the offset control pin (Voffset1) and open output.
www.iterrac.com
This is a Production data sheet. See "Product Status Definitions" on Web site or catalog for product development status.
iTerra Communications 2400 Geng Road, Ste. 100, Palo Alto, CA 94303 Phone (650) 424-1937, Fax (650) 424-1938
February 23, 2006 Doc. 4040 Rev 0
4
IT3017 5 Gb/s High-Sensitivity Limiter Amplifier
Output Voltage Control
700 600 Eye Amplitude (mV) 500 400 300 200 100 0 -100 -5.5
Eye Amplitude vs Vctrl
100 95 90
Power Supply Current
Current (mA)
-5 -4.5 -4 -3.5 -3 -2.5 -2 -1.5 -1 -0.5 0
85 80 75 70 65 60 -6 -5 -4 -3 -2 -1 0
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Control Voltage Vtrl (Volts)
Control Voltage (Volts)
Bit rate: 2.5 Gb/s, Vctrl =-1.7 V Vin =+/-200 mVpp, Vou t =+/-340 mVpp
Bit rate: 2.5 Gb/s, Vctrl =-2.7 V Vin =+/-200 mVpp, Vout =+/-160mVpp
www.iterrac.com
This is a Production data sheet. See "Product Status Definitions" on Web site or catalog for product development status.
iTerra Communications 2400 Geng Road, Ste. 100, Palo Alto, CA 94303 Phone (650) 424-1937, Fax (650) 424-1938
February 23, 2006 Doc. 4040 Rev 0
5
IT3017 5 Gb/s High-Sensitivity Limiter Amplifier
Recommended Operational Setup
Apply -5.2 V at Vee1 and Vee2 Apply 0 V at Vctrl for maximum output
Vctrl
560pF 560pF
0.1F
1F
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DC blocking capacitors optional
Voffset (+)
0.1F
VL1
Din
VL2
Q
RF input
/Din
IT3017
/Q
RF output
Voffset (-)
0.1F
Vee1 Vc b
Vee2
Vee= -5.2 V
560pF
0.1F
Vee= -5.2V
0.1F
560pF
0.1F
www.iterrac.com
This is a Production data sheet. See "Product Status Definitions" on Web site or catalog for product development status.
iTerra Communications 2400 Geng Road, Ste. 100, Palo Alto, CA 94303 Phone (650) 424-1937, Fax (650) 424-1938
February 23, 2006 Doc. 4040 Rev 0
6
IT3017 5 Gb/s High-Sensitivity Limiter Amplifier
Package Drawings, Pinouts
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Pinouts:
P1: GND P2: Din (RF input) P3: /Din (/RF input) P4: GND P5: Voffset (-) P6: Vee1 P7: Vcb P8: Vee2 P9: GND P10: /Q (/RF Out) P11: Q (RF Out) P12: GND P13: VL1 P14: Vctrl (voltage control) P15: VL2 P16: Voffset (+)
www.iterrac.com
This is a Production data sheet. See "Product Status Definitions" on Web site or catalog for product development status.
iTerra Communications 2400 Geng Road, Ste. 100, Palo Alto, CA 94303 Phone (650) 424-1937, Fax (650) 424-1938
February 23, 2006 Doc. 4040 Rev 0
7

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